Which of the following states is entangled?
a) |++
b) 45|01−35|11]
c) 1/√3|01 +1/√3|10−1/3|11
d) 1+i/√22|++ − 1+i/√22|+−
+ 1−i/√22|−+ − 1−i/√22|−−

Question

Which of the following states is entangled? 
a) |++> 
b) 45|01>−35|11>] 
c) 1/√3|01> +1/√3|10>−1/3|11> 
d) 1+i/√22|++> − 1+i/√22|+−> 
+ 1−i/√22|−+> − 1−i/√22|−−>

goformit100 · Answer

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john_es · Answer

I think (d) is the only one that is entangled ("systems where the second electron is in the opposite configuration to the first").